package day02;
//double类型的演示
public class DoubleDemo {
    public static void main(String[] args) {
        //3)double:双精度浮点型，8个字节
        double a = 3.14; //3.14为小数直接量，默认为double型
        float b = 3.14F; //3.14F为float型直接量

        double c=3.0,d=2.9;
        System.out.println(c-d); //0.10000000000000009，发生舍入误差了
        double e=6.0,f=4.9;
        System.out.println(e-f); //1.0999999999999996，发生舍入误差了
        double g=6.0,h=1.9;
        System.out.println(g-h); //4.1，没有发生舍入误差
    }
}
















